CN207906379U

CN207906379U - A kind of plastic cement expansion tightening wheel

Info

Publication number: CN207906379U
Application number: CN201820124703.9U
Authority: CN
Inventors: 叶修杰
Original assignee: Wuxi Mcgee Xi Mu Precision Molding Co Ltd
Current assignee: Wuxi Mcgee Xi Mu Precision Molding Co Ltd
Priority date: 2018-01-24
Filing date: 2018-01-24
Publication date: 2018-09-25
Anticipated expiration: 2028-01-24

Abstract

The utility model discloses a kind of plastic cement expansion tightening wheels, it includes the inner ring and outer ring of integral structure, bearing is installed in the inner ring, both sides between the inner ring and outer ring are both provided with several connection ribs, the interlaced setting of connection rib of the inner ring and outer ring both sides, the connection rib tentatively become smaller successively from inner ring outer rim to the width of outer ring inner edge.Above-mentioned plastic cement expansion tightening wheel not only increases the intensity of expansion tightening wheel, extends its service life, and can improve the machining accuracy of product, makes expansion tightening wheel closer to theoretical circle, greatly reduces it and runs noise.

Description

A kind of plastic cement expansion tightening wheel

Technical field

The utility model is related to a kind of expansion tightening wheels, more particularly, to a kind of plastic cement expansion tightening wheel for automobile.

Background technology

Expansion tightening wheel is the belt stretcher for car transmissions, can be according to the different tightness of belt, automatically Tensile force is adjusted, so that transmission system is stablized safe and reliable.Expansion tightening wheel is a vulnerable part of the spare and accessory parts such as automobile, and belt uses the time It has grown and has been easy to be stretched, some expansion tightening wheels can automatically adjust the tension of belt, in addition have the operation of expansion tightening wheel belt more flat Surely, noise is small, and can prevent from skidding.It is divided into metal expansion tightening wheel and plastic cement expansion tightening wheel according to the difference for making material.

The current existing plastic cement expansion tightening wheel for automobile causes its essence because that can not well solve the problem of plastic cement is shunk Spend it is poor, operation noise it is larger.

Utility model content

The purpose of this utility model is to provide a kind of plastic cement expansion tightening wheels, small with Product Precision height and operation noise Feature, to solve the problems, such as that there are low precision and operation noise are big for the plastic tension wheel for automobile in the prior art.

For this purpose, the utility model uses following technical scheme：

A kind of plastic cement expansion tightening wheel comprising the inner ring and outer ring of integral structure is equipped with bearing in the inner ring, it is described in Both sides between circle and outer ring are both provided with several connection ribs, wherein the connection rib phase of the inner ring and outer ring both sides Mutually it is staggered.

Particularly, the connection rib tentatively becomes smaller successively from inner ring outer rim to the width of outer ring inner edge.

Particularly, it is 1.2 ㎜ that the connection rib, which is connected to the width of inner ring outer rim, and the width for being connected to outer ring inner edge is 0.9㎜。

Particularly, the unilateral side between the inner ring and outer ring is provided with 30 connection ribs, the total 60 connections rib in both sides Item.

The beneficial effects of the utility model are that the plastic cement expansion tightening wheel has the following advantages compared with prior art：

1) the connection rib of both sides is interspersed, and not only increases the intensity of expansion tightening wheel, extends its service life, simultaneously The machining accuracy that product can be improved makes expansion tightening wheel closer to theoretical circle, greatly reduces it and runs noise；

2) connection rib tentatively becomes smaller successively from inner ring outer rim to the width of outer ring inner edge, can improve plastic cement after-contraction and ask Topic；Simultaneously can subsequent compensation realize product circularity it is more round.The circularity of expansion tightening wheel is set to reach within 0.08.

Description of the drawings

Fig. 1 is the front view for the plastic cement expansion tightening wheel that specific embodiment of the present invention provides；

Fig. 2 is the sectional view for the plastic cement expansion tightening wheel that specific embodiment of the present invention provides.

In figure：

1, inner ring；2, outer ring；3, bearing；4, rib is connected.

Specific implementation mode

Further illustrate the technical solution of the utility model below with reference to the accompanying drawings and specific embodiments.

It please refers to Fig.1 with shown in Fig. 2, in the present embodiment, a kind of plastic cement expansion tightening wheel includes 1 He of inner ring of integrated injection molding Outer ring 2, the outer ring 2 are located at except the inner ring 1, bearing 3 are equipped in the inner ring 1, between the inner ring 1 and outer ring 2 Both sides be both provided with 30 connection ribs 4, both sides are total to be provided with 60 connection ribs, and 2 both sides of the inner ring 1 and outer ring The 4 interlaced setting of connection rib, the staggered designs of connection rib 4 can bring the enhancing of intensity, but also bring along note simultaneously After-contraction is moulded, i.e., by the design that is staggered above and below rib position, becomes 60 polygons.Make expansion tightening wheel closer to theoretical circle.To It reduces regular belt and pats the noise that wheel generates.

The connection rib 4 tentatively becomes smaller successively from 1 outer rim of inner ring to the width of 2 inner edge of outer ring, and the connection rib 4 connects The width for being connected to 1 outer rim of inner ring is 1.2 ㎜, and the width for being connected to 2 inner edge of outer ring is 0.9 ㎜.

Above example is to elaborate the basic principle and characteristic of the utility model, and the utility model is not by above-mentioned example Limitation, on the premise of not departing from the spirit and scope of the utility model, the utility model also has various changes, these changes Change and change and both falls in claimed the scope of the utility model.The utility model requires protection scope is wanted by appended right Ask book and its equivalent thereof.

Claims

1. a kind of plastic cement expansion tightening wheel comprising the inner ring and outer ring of integral structure is equipped with bearing, the inner ring in the inner ring Both sides between outer ring are both provided with several connection ribs, which is characterized in that the connection rib of the inner ring and outer ring both sides The interlaced setting of item.

2. plastic cement expansion tightening wheel according to claim 1, which is characterized in that the connection rib is from inner ring outer rim to outer ring The width of edge tentatively becomes smaller successively.

3. plastic cement expansion tightening wheel according to claim 2, which is characterized in that the connection rib is connected to the width of inner ring outer rim Degree is 1.2 ㎜, and the width for being connected to outer ring inner edge is 0.9 ㎜.

4. plastic cement expansion tightening wheel according to claim 1, which is characterized in that the unilateral side between the inner ring and outer ring is provided with 30 connection ribs, the total 60 connections rib in both sides.